Word List: pel, puls = drive, driven, force
compel to force someone to do something; to drive someone into action
dispel to drive away; to force out of one’s mind; to go away
expel to force or drive out; to force to leave
impel to drive forward; to urge to action; to motivate
impulse a sudden urge that drives someone into action
propel to force to move forward; to drive onward
pulsate to vibrate; beat; forced to produce short bursts
repel to drive back; to ward off or keep away
repellent a substance used to drive away insects or animals
repulsive disgusting; tending to drive off; offensive